Question

escreva as equações na forma geral e resolva Ax2+3=4x

Answer 1

x²+3=4x
x²-4x+3=0

a= 1 b= -4 c= 3

∆= b²-4.a.c
∆=(-4)²-4.1.3
∆=16-12
∆=4

X= -b±√∆/2.a
X= 4±√4/2.1
X=4±2/2

X'=4+2/2=6/2=3

X"=4-2/2=2/2=1

S={3;1}